This interactive bar chart displays the 2020 population figures for 30 countries, using horizontal bars to rank each nation along a linear scale. The visualization employs React to manage the SVG rendering, with D3 v5 handling data loading, scales, and axis generation through functions like `scaleBand` and `scaleLinear`. Population data is fetched from a CSV file and formatted using D3's `format` utility, converting values to billions for tooltips. The chart features blue tick lines, green bars, and a Poppins font, with the y-axis listing country names and the x-axis labeled “POPULATION-2020.”